Ceusher



Dec. 25, 1928.

H. J. SHELTON CRUSHER 2 Sheets-Sheet 2 Filed Sept. 278, 1927 -Patented Dec. 25, 1928.

UNITED s'rlvr-Es 1,696,213 PATENT OFFICE.

HARRY il'. SHELTON, OF UNIVERSITY CITY, MISSOURI.

CRUSHEB.

Application led September 28, 1927. Serial No. 222,431.

This invention relates to certain new and useful improvements in Crushers for rock, coal and other material, the. peculiarities of which will he. .hereinafter described and claimed.

The main object of my invention is to provide au improved travelling breaker plate of pivotally connected impact plates (zo-acting with the crushing elements and having proteeted'joiuts at. the side edges; set-madly. to a eompound impact plate providing a face plate subject to wear, adapted to be readilyY removed and another set in place; thirdly, to means for supporting said impact plates at or near their ends; fourthly, to operative driving connections for said impact plates; tit'thly, to means for adjustably supporting the impactplates and driving means; and to other points hereinafter described claimed.

Inthe accompanying drawings on which like reference 4numerals indicate corresponding parts, Fig. 1 represents a front View of a ernsher with my. improvements applied thereto. with parts broken away to show the construction: Fig. 2 a vertical View inside the housing at 2 i), Fig. l: Fig. .3 a side elevation of theright-hand side of Fig. 1; Fig. 4

a partial plan view of the right hand of'the driving head: Fig. 5 a bottom plan View of the face plate portion of my impact plate; Fig. 6 an edge view ot the same; Fig. 7 a plan view of the base plate portion of my impaet plate with location of the face plate indicated by dash lines: Fig. 8 an edge View of the same: Fig. fl a bottom plan view of the same: Fig. 10 a cross section at the center on the line ltl-lt); Fig. 11, a cross section on the line 11e-11; and Fig. 12 an end View of the same. t

Referring to the drawings, the numeral 1 designates a crusher shaft mounted in suitable bearings and carrying discs 3 having rods 4 on which are pivoted hammers 5 forming the pefrerred form of rotating crushing elements. These constitute the rotor which is rotated in the direction of the arrows, by

and

pointed to serve as a scraper as described later. Y

lletween the sides at the trontis mounted a series ot impact plates pivotally connected to torni an endless chain of plate steeply inclined and travelling slowly downward in the direction of the arrow` in close proximity to the hammer circle, and constituting a travelling breaker plate, between which and the hammers or other rotary beaters, the material is primarily crushed and proceeds to the cage below for further reduction or to escape through the openings between the bars. Since the wear is lnainly on the face, each of these impact plates preferably consists of two tarts: an upper face plate 12,

lla'.

preferably or manganese steel to serve as a wear plate; and a lower base plate lil.

preferably of cast steel, on which t-he face plate is detachably mounted in any suitable. manner, preferably by several tenons 111: depending in a line trom the under side of the face plate and extending through mortise holes l5 in the. base plate beyond the lower tace. so as to allow a rod 1G to be passed through aligned holes in the tenons and bear against. the under side ot the base plate as shown in Fig. 1. Cotter pins keep the rod from shifting. The mortise holes are located to one side ot a web and beam tries 17. centrally depending from the base plate lengthwise, having its greatest depth midway of the ends which have cross webs- ]S and 19 forming recesses in which are preferably mounted respective rollers 2t) on center shafts 21 secured by cotters as indicated. The holes 22 in these webs line up with the holes in the tenons when in place and are exposed at the front of the Crusher when theypass a recess or other opening in' the side housings so as to allow insertion and removal of said fastening rod 16. Intermatching rounded tongues 23 and 24 on the side edges ofthe base plate, preferably at the ends. allow hinged connection between adjacent base plates on center pins through holes 25 and 2G that center substantiallywith the side edges ofthe base plate 13 which are also lbeveled ott at 27 on the lower side accordnabv At cach end of the `base plate at one side of the center is an extension 28, preferably triangular, from the web 18, having a vertical rectangular tooth 29 extending above the upper face of the base plate suhetantiallv the thickness of the face plate l2, which has a rectangular matchin hole or notch 30, Fig.

5, accordingly. In eac 1 impact late the facev portion is offset `from the lengt wise center and thus overlaps at one side edge the adjacent base plate portion, and its other side edge sets back from the same side edge ot' vthe base plate, as shownin Fig. 1, andfindi-l cated by dash lines'in Fig. 7. On each side edge of the impact plate two abutting edges with a connecting face are thus formed making a zig-zag -joint `for lthe impact plates.

The lower face of the Wear plate and thel upper face of the base plate lie close together practically in the same plane,-so that the 15' wear plate beds down solidly on the base teeth 29 and teethof sprocket wheels. l l top of the endextensions 28 is below the top plate to withstand the impact of crushing the. material under the blows of the hammers.

A drive chainV 31 is mounted above the extension 28 from eachend of the base plate and is supported thereby'on the tooth 29. This chain has a pitch of substantially one-half the width of the base plate, so that two links 5f the chain correspond to the distance between centers of the hinge holes 25. and 26, and one link is enga ged by the tooth 29 whilethe other is adapted to be engaged by a tooth of sprocket wheels. Therefore alternate links engTage surface of the base-plate a depth corresponding to that of the' driving chain used, which thus lies v-in an end recessbetweenl the two l plates'and is covered by the face plate in position and alternate links are engaged by the teeth or other means connecting these plates through said links. The'face plate engages the top of the'tooth 29 so .that the pull of the chain on'tooth 29 is resisted by the reaction downen the teeth 29 before-theface plates are put on the base plates and can be simply.

lifted ofi' the teeth` 29 when worn, by first rei moving the face plates; meantime the chain Y ternate links and connecting members.

is securely engaged-by alternate links to the compound plates since it'lies in the guarded space between the endsv of both the plate members with said teeth passin Y both of said This construction -allows the-,use

o: through alof-.any suitable chain of: standard manufacturesuch asl that known as Link-belt,-V

-without any'alteration of the commercial article, thus securing strength andready reyplacement of the chain.

- This driving chain 31 at each endof the impactl platepassesover/suitable driving sprockets 32, keyed vto a .driving shaft 33 lmounted in' bearings 34 on the 'side housing,

and `preferably driven through a fiexible coupling 35 by a reduction gear motor or otherwise,la t a comparatively slow speed such as one revolution per minute. The sprocket wheels are notched between the sprocket teeth, to receive the triangular extensons 28 ofthe base plates as shown in Figs. 1, 2 and 3.

Corresponding sprocket wheels 36 are rotatably mounted on a preferably stationary or non-rotary lower shaft 37, adjustably 4mounted so as 'to be adjusted vertically to tighten the driving chains, and laterally toward and away from the hammer circle to regulate the fineness of the 'crushed product. In the latter adjustment, the filler plate 38 of the cage is varied or the spaces of the cage bars are otherwise adjusted to correspond.'

The front bar extends upward adjacent to the travelling yimpact plates and is adapted toY serve as a scraper for the material adhering to the face of said plates. j l

These driving sprockets and corresponding carrying sprockets are-mounted in offsets 39 (Fig.4 4) of the side housing so that the sides 6 with liners 40 overlap the impact plates.` The top ends of the teeth 29 in the matching notches 30 of the face plates are thus protected from battering by rock being crushed on these vertically inclined impact plates mounted in this'widened front ot the crusher, and crushed material is not readily forced between the guarded ends of the impact plates and the side housings. Any fine feed material entering the offset finds exit past the-ends of the impact plates through the clearance space 41, Fig. 1. The necessary play at the sides of the impact plates is .pro-

tected by the overlapping'or zig-zag form of the sideedges as above described so that cornparatively little material finds its wayA into the space between the sprocket wheels in practical operation.

The ends of ported directly on track beams .42 of I-beam or otherv cross section, without intermediate support for the impact plates', the beams at their up er ends having pivotal bearings on the driving shaft 33 or otherwise adjacent to the sprocket wheels, and their lower ends slotted-for` slidably embracing or otherwise the lower shaft 37'as indicated in Fig. 2. The lower shaft'is. referably. square between the sprocket whee s. Upon the edge flange of thesehanging pivoted beams, track the said rollers 20 that support the web portions 18 and 19 adjacent to said -fla-nge and preferably just out of sliding contact therewith. This r rolling contact on 'said track beams makes a large reduction of power required for the travelof the impact plates as compared with a prior construction having a platen supportthe impact plates are sup-I ing the impactjplates between the side housings, as the friction 'of sliding contact of such plates on such la platen under the vpressure of the hammer blows incrushing rock, is very considerable: The' 4wear of such platesv and platen in sliding contact is also increased by the material forced through theabutting plain jointsof said prior construction which increases the power required to move such plates and also accumulates inside the lower loop of such series of plates causing trouble and difficulty of removal. My construction of zigzag joints'at the side edges of my plates practically prevents material passing inside through the joints. I

For adjusting the lower shaft to and from the hammers any suitable means' may be used, such as a flanged head 43 on a screw 44 secured by nuts to the webs of the bearing pedestal or elsewhere. The vertical adjustment is obtained by a screw 45 operating in a nut slotted in a boss 46 on the side housing, or otherwise. Since'the lower ends of the track beams are slidably engaged to this lower shaft,

the` lateral adjustment of lower shaft andl beams is simultaneous and their relation laterally is maintained during adjustment, while allowing variation vertically by operating said screws 45 as stated.v

I claim:

1. A crusher comprising an endless series of vertically inclined travelling impact plates provided with supporting rollers near their ends and end extensions adapted for chain e11- gagement projecting beyond said rollers,

track beams for said rollers, removable driving chains detachably connected to and supported by said extensions, and means to operate said chains.

2. A crusher comprising side housings having a vertically'inclined offset in each side forming overlapping shoulders and a widened front, an endless series of vertically inclined travelling impact plates having their ends mounted within said offsets and guarded by said shoulders, supporting rollers mounted near the ends of said plates, adjustably mounted track beams for said rollers, detachable driving chains supported on said plates and within said offsets, upper and lower sh afts carried by the housings, and sprockets mounted on said shafts opposite said shoulders in the housings.

3. A crusher comprising an endless series of vertically inclined travelling plates each consisting of a base plate and a detachable face plate,-the base plate being provided with supporting rollers near its ends and also end extensions projecting beyond said rollers and each extension having a tooth projecting upwardly and engaging the face plate,-de tachable driving chains supportedl on said extensions and engaging said teeth between the face plates andl base plates, and driving means therefor, substantially as described.

4. A crusher comprising an endless series of vertically inclined travelling impact plates each consisting of a Ybase plate and a face plate,--th`e base plate having su porting means near each end and a depending web deepest in the middle between said means, and also'having mortise holes,-and the face plate having depending tenons matching said mortise holes and extending Vbelow the base plate, and fastening means for said tenons.

5. A crusher comprising an endless series of vertically inclined travellig impact plates each consisting of a base late and a detachable face plate set later y oif center thereon,-each base plate having a recess at each end below its top surface and covered by the corresponding end of the face plate, a driving chain at each end mounted between said plates in said recess, and means passing through alternate links of said chain and connecting said plates, substantially as and for the purpose described.

6. A crusher comprising side housings each havin an oll'set forming a widened front and guarding shoulders extending from top to bottom, an endless series of compound travelling plates mounted in said widened front and each consisting of a base plate and a detachable face plate set, laterally olf center thereon,the ends being mounted in said olfsets and connecting means at said ends being guarded by said shoulders, substantially as -7 described.

7. A crusher comprising an endless series of vertically inclined travelling impact plates each consisting of a base plate and a detachable face plate-the base plate having aligned mortise holes through the middle and also cross webs near each end provided with rollers mounted therein and holes in line with the mortise holes,-and the face plate having depending aligned tenons matching said mortise holes and provided with holes aligning with the holes in said cross webs, and a rod passing through the said holes in tenons and cross webs and removable at the front of the crusher, substantially as described.

8. A crusher comprisin an endless series of vertically inclined trav impact plates provided with supporting ro ers, an upper driving shaft and a lower shaft-both operatively connected to said impact plates,- track beams for said rollers pivoted near their upper ends and slidably enga ng said lower shaft, and means to adjust t e lower shaft laterally and simultaneously the track beams.

9. A crusher comprising an endless series of vertically inclined travelling impact plates provided with supporting rollers, an upper driving shaft and a lower shaftboth operatively connected to said impact plates,-track beams for said rollers pivoted near their upper ends on said driving shaft and having a slotted lower end slida ly engaging said lower shaft, and means to adjust the lower shaft laterally and simultaneously the track beams.

10. A crusher comprising side housings, an endless series of travelling impact plates, an upper driving shaft, a lower non-rotary square shaft having round ends extending through the side housings, sprocket wheels rotatably mounted on said round ends adjacent to the side housings, adjustable track beams pivotally mounted near their upper ends on said driving shaft and having slotted ends slidably engaging said lower shaft, bearings for the ends of the lower shaft, and means to adjust said bearings vertically and laterally,-the lateral'adjustment only affecting said track beams also.

11. A crusher comprising side housings, an endless series of travelling vertically inclined impact plates mounted therein, and a cage bar having a sharply angular side edge with one face adjacent to the path of said travelling impact plates and adapted to scrape olf the adhering material being crushed.

12. A Crusher comprising an endless series of travelling impact plates each consisting of a base plate and a detachable face plate-the base plate having mortise hole at one side of the central plane and the face plate having depending tenons extending ythrough said mortise holes and below the base plate,-the face plate being in substantially close contact with the base plate forming a solid compound plate adapted for impact and also disposed laterally oil center from the base plate, and fastening means therefor, substantially as described.

13. A crusher comprising side housings having offsets forming guarding recesses, an endless series of travelling impact plates hinged together and having their ends mounted in said recesses and each plate con- Sistiner of a base plate and a superposed detaehable face plate set olf center in close contact therewith-the meeting faces of said .plates being in substantially the same plane andmaking a solid compound impact plate in the portion subject to impact, substantially as described.

14. A Crusher comprising a series of travelling impact plates each consisting of a base plate and a superposed face plate detachably mounted thereon,-the ends of the base plates being separated from the adjacent ends of the face plates by a space suflicient to receive a link-belt chain, and each space, provided with a tooth connecting both plates and detachably engaging the interposed chain, substantially as described.

15. A crusher comprising aseries of compound travelling impact plates each consisting of a base plate and a face plate detachably mounted thereon,-said plates lbeing separated at their ends by a space adapted to receive a link-belt Chaim-the base plate having a tooth extending through said space and engaging the face plate and adapted to pass through a link of the chain andy resist the pull of the chain at the middle of the tooth, substantially as described.

16. A Crusher comprising a compound travelling impact plate adapted to be supported at its ends only and consisting of two plates in close contact with each other be tween the points of support,-one of said plates having end extensions beyond said points of support and spaced from theother plate, and each extension having a tooth engaging the other plate and adapted to detachably engage a link of chain interposed between said extension and the other plate, and means to detachably secure said plates together, substantially as described.

In testimony whereof I have affixed my signature.

HARRY J. sHELToN. 

